Nozzle-planing machine.



W. 1?. RICE.

NOZZLE ILANING MACHINE.

APPLIOATIOR FILED JULY 8, 1969. 1,063,597. Paten June 3, mm

3 BHEETS-BHEET 1.

Witnesses: inventor:

Walter" F. Rica W. F. RICE.

NOZZLE PLANING momma. APPLICATION FILED JULY 8, 1909.

1,063,597. Patented Jline 3, 1913. v

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Patented June 3, 1913.

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or QUINCY, MASSACHUSETTS, ASSIGNOR To GENERAL nnnornrc COMPANY, A CORPORATION on NEW YORK.

NOZZLE PLANING MACHINE.

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Specification of Letters Patent.

Patented June 3, 1913..

Application filed July 8, 1909. Senia No. 506,599.

e it known that I, VALTER F. Rica, a man of the l mted States, residing at eh- ,tts,-have invented certain new and useg I" i -ful lmprovements in'Nozzle-Planing Machine's, of which the-following is a specificanon.

' Thls 1nvent1on relates" to metal worldng l machines, and its object is to provide mechanism 'for automatically planing the surfaces of'nozzles for elastic fluid turbines. Such nozzles are, usually made. by casting segments of a circular ring in which the nozzles are cored out inthe rough.

Inorder to afford smooth passageways for the steam or other elastic fluid, the inner surfaces of the nozzles must be machined, and my invention aims to provide a machine tool adapted to perform this work, the several parts being adjustable so that a variety of nozzles can be operated on. v

The machine comprises a bed-plate on which is supported a bracket to which the nozzle blank is fastened. A base is swiveled mounted. An electric motor on the sliding be de'sired, while the laterally sliding frame frame drives a crank shaft whose crank is coupled by a connecting rod with the slide to reciprocate the planing tool. The swivel base enables the tool to work upon either right-handed or lefthanded nozzles, as may and'vertically adjustable tool-block enable the tool to be adjusted to work on any part of anozzle and nozzles of various widths.

In the accompanying drawings, Figure 1 is afrontelevation of my improved nozzleplaning machine, partly in section; Fig. 2- is an end elevation, partlyin section Flg. 3 is atop plan view, showing the swivel base set at an angle to the back plate; and Fig. 4

is an enlarged section of a portion of a nozzle segment.

Referring to Figs, land 4, it will be observed that the nozzles l-are rectangular in 0 cross section and'extend obliquely through the segment 2, their Walls being straight plane surfaces which diverge slight1y s0 thatuthesteam can expand in passing through them from the bowls 3 at the inlet ends thereof. Themachine for planing the Qnincyjcounty 'of-Norfolk, State of Massa-- inside of these nozzles. comprises a bed-plate 4- mountcd on'legs 5 and having secured along its rear edge a bracket 6 carrying a long wide upright back-plate 7 in which are several slots 8, preferably vertical, as shown. Studs 9 are adjustable along said slots and serve to support the nozzle segment 2.

. Clamping plates 10, bolted to the back-plate,

secure the segment rigidly place, with the wider ends of the nozzles outward. At the middle of the bedplate is'a bearing for an upright stud 11 projecting downwardly from one end-of a swivelbase 12, which is a flat plate lying on the bedplate. The'base has lugs 13 through which pass T-headed bolts 14 engaging with circular. undercut grooves 15 m the bedplate concentric with the stud 1 1. Graduations-16 along one or more of these grooves enable the swivel base to be accurately ad usted to any desired angle with thefrear edge of the bedplate.

\Vhen properly adjusted the base can be rigidly clamped in place by the bolts 14. Mounted upon the swivel base. is a slideframe 17. The base and the framehave interlocking transverse grooves and guide ribs and the frame can belaterally adjusted on the base by means of a transverse feed screw 18, preferably provided at. each end with squaredportions to receive a wrench. The

slide-frame comprises a heavy longitudinal beam 19 on which is mounted the inverted U-shaped slide 20 secured by a gib 21 passing under the beam. On one side of the slide is a longitudinal undercut slot in which is adjustably secured a wrist-pin .22. A connecting rod 23 connects said pin with acrank pin 2" adjustably secured in a slot in a crank 25 on a shaft QGjournaled in a bearing 27 at one end of the slide-frame. train of speed-reducing gears 28 connects said shaft with an electric motor 29 mounted on pedestals30 erected on the slide-frames at either side of the beam 19. On. each side of the slide is -a vertical dovetail rib on which slides a tool-block 31, which can be adjusted up and down by a feed screw 32. Between the two blocks is an upright shaft 33 having a handwheel 34 and a gear-wheel 35. The latter meshes with. a pinion which can be secured upon either of the feed screws depending upon the position of the swivel base and the particular tool-block in use. Each tool-block has means for seouring thereto a cutting or planing .tool,

such for instance as the grooved horn 37 in' which the tool 38 is clamped by a bolt 89.

I The operation is as follows: The nozzle segment is clamped to the back-plateand the swivel base is swung to the proper position to cause thetool to cut the surface of one side of the nozzle on the predetermined angle of inclination of said nozzle. The graduations on the bedplate enable the machinistto set the swivel base very accurately' The motor is then started, reciprocating the slide andthe tool and planing the surface of the nozzle. The depth of cut can be regulated bythe transverse feed screw 18. After one side has been finished, the swivel base can be re=adjusted to the proper angle for the other side -of the nozzle, the tool being reversed in the holder. The top and bottom surfaces can also be finished by. giving the' tool a quarter turn in its holder; the tool shank being made square foi" this purpose.

When one nozzle has been finished, the segment 2 must be released, shifted to a new position, and clamped anew, in order to bring'another nozzle into position for machining. As the segment is a portion of a circular ring, it can-be readily shifted by moving it endwise on the studs 9 after they have been once located for a segment of a given radius. Successive nozzles can be finished exactly alike by setting the swivel base to the same graduations for similar surfaces to' be machined. If nozzles facing in the other direction are to be finished, the swivel base is swung to the opposite end of the bedplate, and a similar series of operationsis carried out. A handwheel e20 enables the tool to be moved slowly when setting it to the desiredangle of cut.

What I claim as new, and desire to secure by Letters Patent of the United States, is,

l. A nozzle planing machine comprising a bedplate having concentric grooves, a bracket. secured thereto, an upright backplate rising from said bracket and provided with slots, studs adjustable along said slots, a swivel base pivoted concentric with said grooves and having clamping bolts engaging therewith, a motor-driven tool supported on said base and reciprocating parallel therewith, and means for adjusting said tool transversely and vertically.

2. A nozzle-planing machine comprising a bedplate, a base swiveled thereon, a slide frame adjustable transversely on said base, a slide movable lengthwise of said frame, and a vertically-adjustable tool-block on each sideof said slide.

3. A nozzle-planing machine comprising a bedplate, a swivel base thereon, a slide frame adjustable transversely on said base, and comprising a longitudinal beam, a slide movable on said bram, means for reciprocating said slide, and a vertically adjustable tool-block on each side of said'slide.

4-1 A nozzle-planing machine comprising a bedplate, a swivel base thereon, a slide frame adjustable transversely on said base and comprising a longitudinal beam, a

power-driven crank. shaft onsaid frame, a

slide onlsaid beam, a connecting rod pivoted to the slide and the crank,-and avertically adjustable tool-block on each side of said slide.

5. A nozzle-planing machine comprising a bedplate, a swivel base thereon, a slide frame adjustable transversely on said base and comprising a longitudinal beam, an inverted-UI-shaped slide on said beam, a crank shaft onsaid frame connected to said slide, a motor ion said frame geared .to said shaft, and a vertically adjustable tool-block on each side of said slide.

6. A nozzle-planing machine comprising a bedplate, a back plate or support thereon to which the nozzle is secured, a base mounted on the bedplate and adapted to be swung horizontally and clamped at any desired angle to said back plate, a reciprocating .membermounted on the base, a tool holder slidably mounted on said member to move rectilinearly, a tool carried by the holder and extending in the direction of reciprocation, said tool being adapted to be turned to operate on all the surfaces of a nozzle, and means for feeding the tool across said surfaces in two planes at an angle to each other.

7. A nozzle-planing machine comprising a bedplate, a base pivotally mounted thereon, a reciprocable member mounted on the base, means for reciprocating the member, a tool holder slidably mounted 'on said member, a tool mounted on the holder and extending in the direction of reciprocation, and means for feeding the tool across the surfaces of a nozzle in two planes at an angle to each other.

8. A nozzle-planing machine comprising a bedplate, a base pivotally'mounted thereon, a sliding member mounted on the base to move rectilinearly, means for reciprocating the sliding member, a tool holder slidably mounted on said member, a tool mounted in the holder and extending in the direction of reciprocation of the sliding membe-, and means for feeding the tool across the surfaces of a nozzle lying in planes, some of which are parallelto the axis of the pivot and others transverse to said axis.

In witness whereof, 'I have hereunto set my hand this seventh day of July, 1909.

WALTER F. RICE.

\Vitnesses Lucy C. HoLLIs, ESTELLA CANNON. 

